need help finding some parts

i recently aquired a stroker in a deal, unfortunately it requires a few parts before it will work again, and i am hoping to lower the cost of sending it ot palmers by aquiring some parts before i send it in to get restored.

List of parts needed:
lower internals (i have the brass valve pieces), linkage arm for the solinoid to the bolt, and trigger frame assembly

any of these parts will help me restore my stroker (p368) to its former glory, any help in locating, or solutions would be greatly appreciated

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